Crankshaft Overview
Crankshaft Overview
• Secure engine to assembly stand using engine and transmission holder (VAS 6095) when performing repair work. Refer to => [ Engine, Securing on Assembly Stand ] Engine, Securing to Assembly Stand.
1 Bolt
• 65 Nm plus an additional 90° turn
2 Bearing Cap
• Bearing cap 1: Belt pulley side
• Retaining tabs of bearing shells and cylinder block/bearing caps must lie above one another
3 Bolt
• Replace
• 10 Nm plus an additional 90° turn
• Replace sensor wheel every time bolts are loosened
4 Needle Bearing
• For vehicles with manual transmission
• Pulling out and driving in, refer to => [ Needle Bearings from Crankshaft ] Needle Bearings From Crankshaft
5 Sensor Wheel
• For engine speed (RPM) sensor (G28)
• Only possible to install in one position - Bores are offset
• Replace sensor wheel every time bolts are loosened
6 Crankshaft
• Axial play new: 0.07 to 0.23 mm; Wear limit: 0.30 mm
• Check radial clearance with Plastigage 0.017 to 0.037 mm, Wear limit: 0.15 mm
• Do not turn crankshaft when measuring radial play
• Crankshaft dimensions, refer to => [ Crankshaft Dimensions ] [1][2]Crankshaft, Engine
7 Thrust Washers
• For bearing 3
8 Bearing Shell for Cylinder Block
• With lubricating groove
• Do not interchange used bearing shells (mark)
• Classification for replacement part ordering, refer to => [ Needle Bearings from Crankshaft ] Needle Bearings From Crankshaft
9 Chain Sprocket
• For chain for oil pump
• Removing and installing, refer to => [ Chain Sprocket ] Service and Repair
10 Bearing Shell
• Without lubricating groove
• Do not interchange used bearing shells (mark)
• The crankshaft bearing shells in the bearing caps are only available as a replacement part with a "yellow" color marking.
Sensor Wheel, Removing and Installing
- Always replace sensor wheel - 2 - whenever bolts are removed - 1 -.
• After tightening a second time, the attachment point of the countersunk screws of the sensor wheel are so deformed that the screw heads lie on the crankshaft - 3 - - arrows - and the sensor wheel is loose underneath the screws.
• Installation of sensor wheel is only possible in one position - the bores are offset.
• Tightening specifications, refer to => [ Crankshaft Overview ] Crankshaft Overview
Upper Crankshaft Bearing Identification
• Arrow points in direction of travel.
From the factory, the upper bearing shells are allocated to the cylinder block with the correct thickness. Colored spots serve to identify the bearing thicknesses.
The letters marked on the lower sealing surface of the cylinder block identify which bearing thickness must be installed in which location.
• If color markings can no longer be read, use the blue bearing shell.
• The lower crankshaft bearing shells are always shipped as replacement part with "yellow" color marking.